Home / 9,119.53-13,680.65-2,878.88

Finding the Fourth Proportional to 9,119.53, 13,680.65 and 2,878.88

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Solution

The fourth proportional to 9,119.53, 13,680.65 and 2,878.88 is: 4,318.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119.53 : 13,680.65 = 2,878.88 : x
  2. Step 2: Convert to fraction form
    9,119.53/13,680.65 = 2,878.88/x
  3. Step 3: Cross multiply
    9,119.53x = 13,680.65 × 2,878.88
  4. Step 4: Simplify right side
    9,119.53x = 39,384,949.67
  5. Step 5: Solve for x
    x = 39,384,949.67/9,119.53
  6. Step 6: Final answer
    x = 4,318.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.